Drill.



No. 702,21. 'P'aiemed'lune lo, |902.

H. n...mcos.

DRILL.

(Applicationjled Aug. 17, 1901.)

2 Sheets-Sheet l.

(No Model.)

D R l L L (Appx'icgtion med Agg. 17, 1901.)

2 Sheets-Sheet 2.

I(No Model.)

' UNITED STATI-3S PATENT @FFT-cn.

, HARRY n. JAcoBs, or cAsTLEeATE, UTAH.

DRILL.`

SPECIFICATION forming part of Letters Patent N o. 702,217, dated JunehlO, 1902. s l Application tiled August 1-7, 1201. Serial No. '72.416- (No model.) y

To alt whom it may cori/cern.- 1

Be itkno'wn that I, HARRY R. JACOBS, acitizen of the United States, residing at and whose post-office address is Castlegate, in the county of Carbon vand State of'Utah, have invented new. and useful `Improvements in Drills, of which the following is a specification.

This invention relates tothe general.v class of drills, but more particularly to ad'rill especially designed for light work, such asis acl complished byjewelers and others doing workV of a similarcharacter.

' frame to a support.

The primary-object of the device is to provide a cheap, durable,'and eicient portable drill embracing and combining all of the desirable features of the post-drill, the ratchet, andthe breast-drill. A l

A further object is to provide a simple and effective drill-,press which may be readily attached ,and detached from the machine and -which may be operated by hand to govern the In order to fully understand the construe-- tion of the novel parts-,of this device, reference should be had to theaccom panyingdrawings, in Which- Figure 1 is a sidie elevation of a drill cori'-d structed in accordance with my invention. Fig. 2 is a sectional view on the line 2 2 of Fig. -1. Fi'g. 3 is a detail View of the gearcarryingsleeve. Fig. 4 is la side elevation of the frame and drill, the driving-gearsbeing removed. Figs is .a front elevation of the drill complete, partly in section. Fig. 6 is a perspective view o f the work-holder. Fig..7 is a perspective view of a bolt for securing the Fig. 8 isa fragmentary detail view of one end of the guide.

Referring to the drawings-by numerals of reference, 1 designates the frame ofthe drill, which is constructed for and designed to carry the drill mechanism, to be hereinafter 'described. This frame comprises a standard2,

having a right-angular and laterally-projecting l extension 4or arm 3at its lower end, carrying at its free end a drill-table 4, provided with a central bore. (Not shown.) The base of a dovetail and is designed to be clamped into a base-plate, to be referredto hereinafter. The standard 1 is T-shaped in cross-sec- ,edge of the extension 3 is formed in the shape tion andprovided with oppositely-disposed 'grooves G and 7 to receive the edges of the jaws of Aa work-clamp. The upper extremity of the standard 2 is curved on an arc'of acircle and terminates in a perforated bearing or collar 8, concentric with the table 4.

9 rdesignates a secondary standard or extern,

to the bearing 13, and the central perforation.

zis concentric with the bearings 8 andl 10, as

well as the table 4. Y

Loosely and revolubl y mounted in the bearings 8 and 14 is a sleeve 15, through which projects a threaded drill-feed 16, carrying onY its lower end a chuck 17 to receive a suitable drill--as, for instance, one similar to the one designated by the reference-numeral 1S. The

upper end of the drill-press projects through the bearing or collar 10 and cai-ries on its free end a hand operating-wheel 19, whereby the press and the drill may be fed towardand away from the table 4, as occasion demands.

Suitahly spaced apart on the sleeve 15 areV two gears 20 and 21. J ournaled in the bearings 12 and 13 is a crown-gear 22, having teeth upon its periphery and teeth, upon its hub to mesh with the gears 20 and 2l alter natel y. This gear 22 may be driven bya crankhandle 23 or a pulley 24, according to the power employed. The speed at which the drill travels will be governed according to whether the gear 21 is in mesh with` the teeth on the periphery of the crown-wheel 22 or Whether the gear 20 is in mesh with the teeth on the hub of said crown-wheel. It should be stated that the sleeve 15 is slidably mounted in the bearings 8 and 14, so that said gears i 2t) and 21 may be brought into mesh Awith either set of teeth on the crown-gear desired. In order to operate the sleeve for the pur- 'posi-rjnst described, I have .provided a piv- 5 o-ted lever 23, secured to the secondary stand ard i) and having n bifurcated end i211-, which engages a circumferential groovel in said s beve l5, so that by pressing upon the lever the sleeve may bernised or lowered to rsuitv .o the operator. rThis lever may be held in itsdetermined'adjustment by means of a set# screw 26, which passes throngh the seme and engages a segment 2.7, carried by the stendxard il. v i

A. work-holder is preferably utilized in con- ,ncction with' this device, and vit comprises an lfarm 'ii, firmly engaging' the Standard 2. The i arm 29 carries .an integral support vor plete 32, beneath which is pivoted a spring-pressed zo fuideplate 325, adapted to be adjnstedbya set-screw 34, threaded in the support forwardof the inlet-nm of the'guideplate 33, which is bifurcated at itsUv i -gnide for the workvv lobe 25 .embracethe d till-trame,

jdrilled and also tov designates a threaded bolt carryingn vlooselymonnlcd nutBG on' the shank thereof. 'lhis bolt is designed to be screwed into the support, so that the base-plate 37 of the same 5o may be fastened byslidingthc slotted groove 38 of said plete intogengagemcnt with the :head 39 of sriid bolt. -The nut A3b will then the screwed np in .place and the plate firmly 'secured to the.' support. The converging 35` flanges 40 and il ot" said base-plate 37 Aform a doveteil` slot 42 to receive the correspondingly-slmped edge oi' the extension 3 of the iframe l, and seid frame may then be fastened against accidental' displacement bythe bolts 4o 43 and i o r by othersnitttiile means. 'lhns 'n temporary bnt firm fastening is provided tor the frame.

It will thus be seen that I have provided a cheap, simple, and d urable device ofthe char- 45 ecter described which will eIectually'per-- form the work for which it is intended, and while I have specifically described in detail what to me at this time appears to be the very best means of accomplishing the' desired resnit I wonldhave it understood thatlldo not limit myself to the exact details of construetion shown, but reserve the right to make such slight changee` and alterations as would lproperly come within the'scope'oi the claims end Withoutdepartingfrom the spirit thereof. t'llnving thus fully described my invention,

V[ie'etive ends to forni said arms forming a bearing, an extension on' the .top of the standard, an arm projecting from the top of the extension and having a bearing concentric with the first-namedbeering, a right-angular bearing carried by the -last-nmned erm, a Lit-shaped arm also carried by the last-named arm and having :t bearing concentric with the right-angular bearing.

2. 'A traine i'or e drill comprising e stand- (rrd having an arm at its top, en extension at Athe top of the standard, and provided with bearings concentric with the bearing in the first-named ernngand `en extension or arm at the lower end of Ithe standard, a. drilLtable carried thereby, Asaid extension being formed in' the shape cfa dovetail in combination with a. face-plate being correspondingly grooved `to receive the dovetail extension. i

IA frame for a/drill comprising n standard having an arm at its topyan extension et the top of the standard, and provided with bearings concentric with the bearing in. the first-named erm, andan extension or arm at the lower endof the standardga drilbtable carried thereby, said extension being formed in the shape of a dovetttil in combination with 'a fece-plete being correspondingly grooved to receive the dovetail extension, and a threaded bolt adapted to be secured to a snitable support and provided with a head designed to engage the lower fece of Alle baseplate.'

4. The combination with a.. frame; of a workholder comprising an arm adapted to embrace the said frame, kan integral plate carried by cured to the first-named plate and means for adjusting said guide-plate. y v

5. A work-holder comprising an arm, an integral plateor snpportcarried by the frame, .a pivoted plete carried by the tiret-named plate, a. spring interposed between the two plates end n set-screw carried by the rstnamed plate for adjusting the guide-plate.

In testimony whereof I ellix my signaturein presence of two Witnesses.

HARRY n. .moons Witnesses: A

Trios. W..1Lnw1s, PAUL HUNTEN.

said arm and aspiring-pressed guide-plate seloo` IOS 

